Specifications

4-23

Cisco IOS Telephony Service, Version 2.02

Chapter 4 Advanced Configuration Tasks

DTMF Integration with Legacy Voice-Mail Devices

For dual tone multifrequency (DTMF) integrations, information on how to route incoming or forwarded

calls is sent by the telephone system in the form of DTMF digits. The DTMF digits are in the form of a

pattern and depend on the voice-mail system connected to the Cisco IOS Telephony Service router.

These patterns are required for the DTMF integration with most voice-mail systems. The DTMF

integration configuration on the Cisco IOS Telephony Service router works with any analog voice-mail

system. Voice-mail systems are designed to respond to DTMF after the system has answered the

incoming calls. The following tasks are required.

• Configuring DTMF Patterns on the Router, page 4-23 (required)

• Configuring Integration Files on Legacy Voice-Mail Systems, page 4-25 (required)

Configuring DTMF Patterns on the Router

The Cisco IOS Telephony Service router provides flexibility for the integration with any legacy

voice-mail system. You can configure multiple tags and tokens for each pattern, depending on the

voice-mail system and type of access. The tag in the configuration pattern must match the number

defined in the voice-mail system’s integration file to identify the type of call. The keywords—CGN,

CDN, and FDN—define the type of call information sent to the voice-mail system.

SUMMARY STEPS

1. vm-integration

2. pattern direct tag1 {CGN | CDN | FDN} [tag2 {CGN | CDN | FDN}]